Internally Threaded body jewelry refers to when a male ball threads into a female shaft. as seen below. Being much less likely to cause damage and irritation, especially at the time of piercing, internally threaded jewelry is considered superior to externally threaded jewelry. It is usually slightly more expensive than externally threaded jewelry, due to the extra machining and labor involved.

Externally Threaded body jewelry refers to when a female ball that threads onto a male shaft. All of our jewelry is externally threaded unless otherwise noted. This type of barbell is usually only used when the gauge of the bar is too small to allow it to be internally threaded, or in cheap, mass produced body jewelry. Some higher-end manufacturers make externally threaded barbells with “step-down threading”, where the threaded section has a smaller diameter than the wearable section; these are fairly uncommon and usually internally threaded barbells are used in their place. Step-down threaded jewelry ends can be inserted into the blunt end of a hollow piercing needle, allowing for less irritation during initial placement than regular external barbells or even internally threaded barbells.

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